diastasis

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diastasis

[dī′as·tə·səs]
(medicine)
Any simple separation of parts normally joined together, as the separation of an epiphysis from the body of a bone without true fracture, or the dislocation of an amphiarthrosis.
(physiology)
The final phase of diastole, the phase of slow ventricular filling.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.